Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
US-2024425381-A1 · Dec 26, 2024 · US
Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B11/02)
Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B11/02) · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C01F11/46 |
| Official title | Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B11/02) |
| Display label | Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B11/02) |
| Total patents | 119 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 7 |
| 2017 | 10 |
| 2018 | 4 |
| 2019 | 10 |
| 2020 | 12 |
| 2021 | 12 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 12 |
| 2025 | 13 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of pretreatment and bromine recovery of PCB incineration ash
US-11198615-B2 · Dec 14, 2021 · US
Mineral Recovery Enhanced Desalination (MRED) Process for Desalination and Recovery of Commodity Minerals
US-2021317026-A1 · Oct 14, 2021 · US
Device and method for desulfurizing crude oil
US-2021246378-A1 · Aug 12, 2021 · US
Powder grinding method and powder grinding machine
US-11045815-B2 · Jun 29, 2021 · US
Preparation of Phosphoric Acid
US-2021171349-A1 · Jun 10, 2021 · US
Method of treating wastewater
US-2021070637-A1 · Mar 11, 2021 · US
System and method for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud
US-10843131-B2 · Nov 24, 2020 · US
Systems and processes for producing hydrogen from sour gases
US-10829371-B1 · Nov 10, 2020 · US
Method of treating wastewater
US-2020325053-A1 · Oct 15, 2020 · US
Hydrometallurgical method for recycling lead from spent lead-acid battery paste
US-2020280111-A1 · Sep 3, 2020 · US
A Method of Pretreatment and Bromine Recovery of PCB Incineration Ash
US-2020262712-A1 · Aug 20, 2020 · US
System and method for desulfurization and denitrification integrated treatment and recycling of flue gas by using red mud
US-2020179872-A1 · Jun 11, 2020 · US
Powder grinding method and powder grinding machine
US-2020156081-A1 · May 21, 2020 · US
Method of producing product inorganic compound and product inorganic compound
US-2020147260-A1 · May 14, 2020 · US
Method for producing lithium hydroxide from lithium phosphate
US-2020079657-A1 · Mar 12, 2020 · US
System for tail gas treatment of sulfur recovery units
US-10556805-B2 · Feb 11, 2020 · US
Exhaust gas purification catalyst
US-2020030780-A1 · Jan 30, 2020 · US
Fiber-to-chip grating coupler for photonic circuits
US-2020003956-A1 · Jan 2, 2020 · US
Wearable device and charger, and method for estimating absorbance of wearable device
US-10488336-B2 · Nov 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01F11/46?
- CPC C01F11/46 is the Cooperative Patent Classification code for “Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B11/02).”
- How many patents are filed under CPC C01F11/46 (Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B11/02))?
- Our database includes 119 publications tagged with this CPC code.
- Is patent activity under CPC C01F11/46 growing?
- Publication counts under this code: 12 in 2024 vs 13 in 2025 (latest complete years).